// Copyright 2021 Red Hat, Inc. and/or its affiliates
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package test

import "os"

// SetSharedEnv sets a value to a given Environment variable
// returns the defer function that MUST be called after your test to not mess up with users' env
func SetSharedEnv(k, v string) (deferFunc func()) {
	backupValue := os.Getenv(k)
	_ = os.Setenv(k, v)
	return func() {
		if len(backupValue) > 0 {
			_ = os.Setenv(k, backupValue)
		}
	}
}
